Assalam alaikum,
Tauheed, the belief and/or affirming the ONENESS of Allah Almighty is one of the 5 pillars upon which Islam is built, the other 4 being Five daily prayers, Zakkat, Fasting during the month of Ramadan and Hajj. To make our Tauheed sound, we must MIND and/or OBSERVE the following Essentials:--
1. To always speak the Truth.
2. To keep all obligations in accordance with the Quran and Sunnah.
3. To keep the heart free from hatred.
4. To avoid forbidden food.
5. To shun innovation in religion, and
6. To be satisfied with Allah Most High in scarcity and plenty, and turn to Him in happiness or affliction.
ALLAHU AKBAR! ALLAHU AKBAR!! WA LILLAHIL-HAMD.